Full list of all 12 Splosion Man achievements worth 200 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Complete the Multiplayer game.
Release The Maw from his cage and send him into space.
Complete a level without killing any Scientists.
Create 5,000 filets.
Eliminate 10 Scientists and stop them from spreading their filthy lies.
Change the controls around in the "Controls" menu.
Select "Credits" from the "Help & Options" menu and watch the whole thing.
Splode 300 times in a single level.
Complete the Single Player game.
Collect all 47 cakes in Single Player mode.
Collect all 47 cakes in Multiplayer mode.
Complete the Single Player game in Hardcore mode.